Geresimov-Drell-Hearn sum rule and low-Q{sup 2} behavior of the polarization structure function of the nucleon
- Yerevan Physics Institute (Armenia)
The Gerasimov-Drell-Hearn sum rule is used to demonstrate that the polarization structure function of the neutron approaches the asymptotic regime at Q{sup 2}=2 GeV{sup 2}. For Q{sup 2}>1.5 GeV{sup 2}, the deviation of the polarization structure function of the proton from its asymptotic value is shown to be within 15-20 percent. Data for the resonance energy region at Q{sup 2}<3 GeV{sup 2} are used to obtain integrals of the polarization structure functions of the nucleon in the region x=0.45-1, where no experimental data are available. These integrals reveal scaling behavior at Q{sup 2}=2-3 GeV{sup 2}, and their values agree with those obtained by extrapolating experimental data to the high-x region. 23 refs., 2 figs.
- OSTI ID:
- 146591
- Journal Information:
- Physics of Atomic Nuclei, Vol. 58, Issue 6; Other Information: PBD: Jun 1995; TN: Translated from Yadernaya Fizika; 58: No. 6, 1088-1091(1995)
- Country of Publication:
- United States
- Language:
- English
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